Bebtbam j



B. J. GRIGSBY.

EXTENSIBLE SPOT LAMP.

APPLICATION HLED AuG.2. 1911.

1,819,478, Patented 001.. 21,1919.

BERTRAM J'. GBIGSBY, 0F CHICAGO,

SPECIALTY CO., 0F CHICAGO,

ILLINOIS, ASSIGNOR T0 ANDERSON ELECTRIC ILLINOIS, A CORPORATION OFILLINOIS.

EXTENSIBLE SPOT-MMP.

Specification of Letters Patent.

Patented Oct. 21, 1919.

Application :tiled August 2, 1917. Serial No. 184,014.

To all 'whom it may concer/n.:

Be it known that I, BERTRAM J. Glasser, a citizen of the United States,and a resident of Chicago, in the county of Cook and State of Illinois,have invented certain new and useful Improvements in Extensible Spot-Lamps; and 1 do hereby declare that the following is a full, clear, andexact description thereof, reference being had to the acompanyingdrawings, and to the characters of reference marked thereon, which formaV part of this specification.

This invention relates to improvements in spot lamps for motor and othervehicles, boats and the like, designed to be attached to any suitablylocated part of the vehicle or other frame in reach of the driver andmounted to be universally movable in substantially all directions,whereby the light rays may be directed to any point on, or at the sidesof, the path of the vehicle.

The invention relates more particularly to improvements in lamps of thischaracter, the parts of which are so arranged, in combination with atake-11p device on which a long length of lamp cord is wound, thatnormally the lamp is sustained on its support as it is to be manipulatedin the usual manner oit a spot lamp, while permitting the lamp to bedetached from its support and withdrawn therefrom so as to carry thelamp to any part of the vehicle within the range of the lamp cord.

A further object of the invention is to provide a lamp structure forthis purpose in which the lamp and take-up device are supported on, andinclosed by, a unitary casing, thereby simplifying its structure and themode of its attachment to the vehicle.

Another object of the invention is to provide a lamp structure for thispurpose in which only the lamp and its reflector is removable from thesupport, thereby reducing the weight of the extension portion of thestructure and contributing to ease and facility of handling theextension member.

Other objects of the invention are to irnprove and simplify lamps ofthis general character, and the invention consists in the combinationand arrangement of the'parts shown in the drawings and described in thespecification, and is pointed out in the appended claims.

In the drawings Figure 1 is an axial horizontal section of the lamp.

Fig. 2 is a detail section on the line 2-2 of Fig. 1, showing the reelin elevation.

Fig. 3 is a section on the line 3-3 of Fig. 1, with parts omitted.

Fig. 4 is a detail of the bracket by which the lamp is attached to asuitable support, as one of the members of a wind shield frame.

As shown in the drawings, 10 designates an elongated cylindric casingwhich consti4 tutes an inclosure and support for the lamp proper and itsreflector and also for the reel or take-up device on which the lamp cordis Wound. Said casing is open at its front end and is provided withrelatively large screw threads 11. 12 designates a reflector which isseated in the open end of the casing and is provided at its larger, openside, with screw threads 14 which engage the screw threads 11 of thecasing whereby the re- Hector is held in position in the casing. 15designates a` lens which is supported in any suitable manner across thefront, open end of the reflector, the margin of the rellector beingherein shown as formed to provide a hollow bead 16 to engage over theedge of the lens. The manner of supporting the lens in the reflector,and the manner of connecting the reector to the casing may be variedwithin the spirit and scope of the invention.

The reflector is provided around its axis with a rearwardly extendingneck 17 which receives the socket 18 of an incandescent lamp 19. Saidsocket may be xed to the neck in any suitable manner, preferably bymeans providing for focal adjustment. As

' herein shown, the socket is slipped endwise into the neck and isfastened thereto by a Aset screw 20. Extending rearwardly from,

and attached to, the neck iiiany suitable manner, as by soldering, is anend piece comprising a cylindric member 22 and an enlarged hollowflange-like member 23 which serves as a handle when lamp is extended,and which is itself provided ccntrally with an opening for the passageof the lamp cord. Said opening is lined by a suitable insulating bushing24.

The rear end of the casing is closed by a semispherical wall 25. ThisWall may be made an integral part of the casing, if de- I hand pieceflange sired, or asherein shown, eparately formed and applied overtherear open. end of vthe casing 10 andattached thereto in any suitablemanner, as by rivets 26. The structure shown is recommended by reason ofsimphcity of manufacture. w

Contained the rear Vend of the casand partially by the sem1' sp ericailend wall 25 1s va. reel 27 provided with end flan '28, upon which' isadapted to be wound e lamp cord 29, latter extends through the centralpening of the for connection in any well the terminals of the lamp 28 isfixed to a 30 mounted in an sintable manner in 31 at opposite points ofthe casing 10. Said shaft and the reel axis aredisposedatarightangletothecentral axis of the reflector. The said reel may knownmanner to socket. reel that is rotaglvely be either an autnalticallyoperated or handpower reel. When automatically operated it may beprovided wath the type of Spui? motor such as is shown in the prior U.Letters Patent to Anderson, No. 1,175,498, dated March 4, 1916'.Asherein shown the reel is manually operated and for this purpose itsshaft 30 is provided at one end, exterior to the casing, with a crank 32and, preferably said crank is composed of two members fhingcd betweentheir ends so that the outer member may be over the inner member in themanner o the hand crank of an ordinary measuring tape so as te occupybut and to t ereby improve the appearance of the lamp.

Current is carried to the conductor of the cord 29 from battery 53, orother source of current supply, through fixed contact fingers 54, 55,that are connected tothe battery and Y bear respectively on conductorrings 56, 57

.that are fixed te the reel and rotate therewith, and said rings areseparately connected tween the battery and to the conductors of thecord, as shown in Fig. 2. A cut-out switch 5 9, having a 'push button60, is rted in the connectlons beingers to open and The casing 10 issupported on the vehicle by means which permits the lamp to beuniversally adjusted so as to direct the rays thereof at substantiallyall angles with respect to thelongitudinal axis of the casing. Theparticular means hereinshown for dirigibly attaching the casing orsupport to a. fixed part of the vehicle is made as follows:

33 designates a bail, the arms 34, 34 o f which extend outwardly aboveand below the 10; and said arms are provided at their ends, in the'plane of the axis of the casing, with bearing .openmgsthrough which, andother'registering openings 1n the casing wall, extend pivot studs 35which close the lam-p circuit.

little space when not in use,

. detached afford a pivotal su port aboutwhich the casing may behorizontally swung. The studs are threaded at their inner ends toreceive nuts 36, and preferably spring washers 37 are interposed betweenthe nuts and the casing wall, which latter is depressed at the pointsthrou h which the pivot studs extend to form p ane faces 38.

' The bail is provided at its `center with an oiset or recessed portion40 which is apertured to receive a pivot stud 41. 42 designates agenerally U-shaped bracket wxhich has a fiat transverse seat 43 to enythe dat facesof the oi-set portion 40 of the bail; and the ends 44 ofthe arms of said bracket are curved to conform to the curvature of thesupport 45 which, as

herein shown may be assumed to be one of the members of a wind shieldframe. The said bracket 42 is clamped on said support 45 by means of abolt 46 which extends through registering apertures of the bracket armsand a nut 47 screw threaded to one end of the bolt. The closed end ofthe bracket 42 is provided with an aperture which registers with anaperture in the olf-set portion of the bail and through which the pivotstud 41 extends. The bail is clamped to the bracket 42 by a. nut 48threaded to the stud 41; and in order to provide a reliable jointbetween the bail and bracket and one which will permit the bail to (bereadily turned on the b ra'cket about the axis of the stud 41, a springwasher 49 is interposed between the nut 48 'and the bottom of therecessed or otiset portion 40l of the bail. 'Dhe joint thus formedbetween the bail and bracket permits angular adjustment of the lampcasing or support through a. large range of vertical movement. Thisvertical angular 'adjustment -in'connection with the horizontaladjustment afforded by the pivot studs 35 permits the lamp to beuniversally adjusted about its fixed support 45 so that the rays of thelamp may be directed throw hout large angular vertical and horizonadjustments.

The detachable connection between the lamp mounting, consisting of thereflector 12 and 'the support for Athe socket, embracing screw threads11 and 14, as herein shown, permits the lamp and its mounting to be fromthe casing or support 10 so that the lamp may be carried to distantparts of the vehicle, boat or the like, on wbich the lamp is mounted,within the range of the length of the lamp cord 29. The constructionshown is such that a reel of large capacity for the cord may be used sothat it is practicall to carry the detached lamp and its mounting to anypart of the vehicle. The flange 23, in connection with the cyl. lindricmember 22, constitutes a convenient hand piece by which to handle anddirect the lamp when so detached.l When the lamp is to be `againattached tothe casing or support 10, the 'cord is wound upon the reel,eithe1 automatically by the use of suitable spring mechanismLor manuallythrough the medium of the hand crank 32.

In order to prevent tendency of the cord from jumping over the flanges28 of the reel, a .suitable lguide is interposed between the normalposition of the lamp and the reel. This guide consists, in the presentinstance, of a wall or diaphragm 51 that extends across the casinginfront of the reel and is provided with .a guide opening 52 in axialalinement with the lamp socket. Said wall or diaphragm 51 is hereinshown as semicylindric to conform to the semicylindric end Wall,-but maybe of other shape, the essential feature being the central guide for thecord lwith some means to support the guide upon the casing wall.

It will be understood that the structural details of the lamp shown anddescribed may be considerably varied without departing from' the spiritof the invention, and the invention is therefore not limited to suchdetails except asl to claims wherein they are specifically set forth, oras imposed by the prior art.

While my improvements have been herein described in respect o-f adirigible spot lamp, it Will be understood that it may be also appliedto lamps for other uses, where the extension feature herein disclosed isrequired.

l claim as my invention: i

1. The combination with a lamp and its reflector and a rotativerewinding reel for a lamp cord in rear of the reflector, the axis ofrotation of the reel being transverse to the central axis of thereflector, of a combined inclosure and support for the lamp, itsreflector and said reel, and means for detachably fixing the lamp andits reflector within said casing.

2. The combination with a lamp, its reflector and a rewinding reel for alamp cord rotative on an axis transverse to the central axis of thereflector, of a combined inclosure and support for the lamp, itsreflector and said reel, a lamp cord windable on said reel and adaptedto be electrically connected to a source of current through terminalsrotating with said reel and coacting fixed terminals, and means fordetachably fixing the lamp and its reflector Within said cas il.' A lampfor the purpose described comprising a unitary casing open at its frontend and closed at its rear end, a lamp and its reflector wholly withinthe casing, with means to removably attach the open end of the reflectorto said open end of the casing, permitting it to be removed through saidopen 'end of the casing, and a rotative rewinding reel supported withinthe closed end of the casing in rear ofthe reflector and adapted toreceive the lamp cord.

4. A lamp for the purpose set forth comprising a unitary casing open atits front end and closed at its rear end, a lamp cord rewinding reelsupported within the closed end of the casing to rotate on an axis at ar1ght .angle t0 the longitudinal axis of the casing, a lamp and itsreflector wholly within said casing, and means to removably attach thereector to said casing at the open end of the latter.

5. A lamp for the purpose set forth cour prising a unitary casing openat its front end and closed at its rear end, a lamp cord rewinding reelrotatively supported within the casing, a lamp and its reflector whollywithin said casing in front of said reel, means to removably attach thereflector to the casing at the open end of the latter, and a fixed cordguide coaxial with said reflector between the lamp and said reel.

6. A lamp for the purpose set forth comprising a casing open at itsfront end and closed at its rear end, a lamp cord rewinding reelsupported within said casing, and a reflector within said casing infront of said reel, with means to removably fix it to the open end ofthe casing and `provided with an axial, rearwardly directed neck toreceive a lamp socket the axis of which is in the plane of the axis ofrotation of said reel.

7 A lamp for the purpose set forth comprising a casing open at its frontend and closed at its rear end, a lamp cord rewindking reel supportedwithin the closed end of the casing, and a reflector wholly within saidcasing, with means to removably fix it in the open end of the casing,and provided with a rearwardly directed lamp socket supporting neckexteriorly formed to constitute a hand piece for said reflector whenremoved from the casingi 8. A universally adjustable spot lampcomprising a combined inclosing casing and lamp support open at itsfront end, a reflector and a lamp socket wholly within said casing,means to removably attach the reflector to the open end of the casing, alamp cord rewinding reel inclosed by and mounted within said casing inrear of said reflector, a supporting bail having its ends exteriorlypivoted to the casing between the ends of the latter, and a memberhaving means of attachment to a vehicle and rota tively connected to thecentral portion of said bail on an axis at a right angle to the axes ofthe bail pivots.

9. The combination with a lamp and its reflector and a rotative'rewinding reel for a lamp cord, of a casing open at its forward end andhaving a rounded, closed rear end, means for detachably securing thelamp re'- flector within the open end of the casing, the reel beinglocated within the closed end of the casin ,with its axis of rotationtransnature in the presence of two w'itnsu-.Q

verse to an in the plane of the longitudinal Chicago, Illinois," this10th day of July, axes of the casing and reflector, a support 1917.

for the casing and a universal connection BERTRM J. GRIGSBY. y 5 betweenthe support an'd the casing. Witnesses: I

In witness whereof I claim the oregoing W. L. HALL,

as my invention, I hereunto append my sig4 A. E. Wmnmon.

